Support TS 4.3 get/set type members (#13089)

Co-authored-by: Nicolò Ribaudo <nicolo.ribaudo@gmail.com>

packages/babel-types/src/ast-types/generated/index.ts

@@ -1712,6 +1712,7 @@ export interface TSMethodSignature extends BaseNode {
   parameters: Array<Identifier | RestElement>;
   typeAnnotation?: TSTypeAnnotation | null;
   computed?: boolean | null;
+  kind: "method" | "get" | "set";
   optional?: boolean | null;
 }
 

packages/babel-types/src/definitions/typescript.ts

@@ -118,6 +118,9 @@ defineType("TSMethodSignature", {
   fields: {
     ...signatureDeclarationCommon,
     ...namedTypeElementCommon,
+    kind: {
+      validate: assertOneOf("method", "get", "set"),
+    },
   },
 });